Balancing on SLACKLINE FOR 30 MINUTES WITHOUT FALLING!! Did I make it or did I fail?

I got sick on this day :D At least, it was worth it as I've challenged myself nicely. I'd never it's sooo challenging to balance on slack for extended period of time. My legs were shaking like crazy after 5 minutes. Now I understand those world records of walking 1 kilmeter line for more than an hour. It's madness!!

Anyway, my challenge was 30 minutes :) I didn't make it...But to be honest, I think I would made it if some unexpected events wouldn't happen ...